Hydraulic lock cylinder mounting clamp

By designing a hydraulic cylinder mounting fixture, the cylinder's oil inlet is automatically sealed, solving the problems of oil leakage and contamination after testing, and improving the stability and production efficiency of the hydraulic system.

CN224527018UActive Publication Date: 2026-07-21ZHEJIANG WUERTUOKE AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG WUERTUOKE AUTO PARTS CO LTD
Filing Date
2025-09-05
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Traditional hydraulic cylinder testing fixtures are not sealed in time after testing, which leads to oil leakage and contamination, affecting performance and increasing the rework rate. In addition, manual sealing is inefficient and prone to errors.

Method used

Design a hydraulic lock cylinder installation fixture, including a base, a detection cylinder, a sealing device and a storage compartment. It automatically closes the cap to the oil inlet of the cylinder, and achieves automatic positioning and sealing through a sliding groove and a pushing device. It also recovers excess oil with a funnel.

Benefits of technology

It effectively blocks oil leakage paths, avoids oil waste and pollution, improves sealing stability, reduces human operation deviations, and ensures the integrity of the sealing surface.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a hydraulic lock oil cylinder mounting clamp, including base, the fixed installation of detection cylinder is equipped on the base, and the oil cylinder to be detected is fixed on the base, and the detection cylinder push rod end and the oil cylinder push rod end to be detected abut, in the oil cylinder oil inlet one end, is equipped with the plugging device, can cover the cap with the oil inlet of oil cylinder and close to prevent the oil cylinder from leaking or secondary pollution. The utility model realizes the automatic capping after the oil cylinder detection, effectively prevents the oil leakage and secondary pollution, improves the efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of mechanical clamping technology, and in particular to a hydraulic locking cylinder mounting clamp. Background Technology

[0002] Hydraulic lock cylinders, as key actuators in hydraulic systems, are widely used in engineering machinery, machine tools, automobile manufacturing, and other fields. Their performance directly affects the stability and safety of the entire hydraulic system. During the production and assembly of hydraulic lock cylinders, specialized installation fixtures are used to position and clamp the cylinders, and testing cylinders are used in conjunction to complete inspections, ensuring that product quality meets design standards.

[0003] Traditional hydraulic cylinder testing fixtures typically only include clamping and testing functions. After testing, the cylinder ports are not capped, making them susceptible to dust and impurities entering during transport and storage, or causing hydraulic oil leaks, affecting the cylinder's subsequent performance. Secondly, some factories manually cap the cylinders after testing, but this method is inefficient, and due to the variety of cap sizes, manual handling can easily lead to incorrect selection or improper installation, resulting in poor sealing of the cylinder ports and even secondary contamination. Furthermore, because the cylinders are not promptly sealed after testing, their precision sealing surfaces may be damaged by impact or contamination, increasing the rework rate. Utility Model Content

[0004] This invention addresses the problems of oil leakage and contamination in hydraulic cylinders after testing in existing technologies by providing a hydraulic cylinder mounting fixture that can quickly cover the oil inlet of the cylinder after testing, effectively blocking the leakage path.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hydraulic lock cylinder mounting fixture, including a base, on which a detection cylinder is fixedly mounted, the cylinder to be tested is fixed on the base, and the push rod end of the detection cylinder abuts against the push rod end of the cylinder to be tested; a sealing device is provided at one end of the cylinder's oil inlet, which can cover the oil inlet of the cylinder to prevent oil leakage or secondary contamination.

[0006] In the above scheme, preferably, a cylinder fixing device is fixedly installed on the base, and the cylinder fixing device includes a first pressure plate, on which a first clamping component is provided.

[0007] In the above scheme, preferably, a hydraulic cylinder fixing device is fixedly installed on the base, and the hydraulic cylinder fixing device includes a second pressure plate, and a second clamping component is provided on the second pressure plate.

[0008] In the above scheme, preferably, the sealing device includes a storage compartment, which can hold a number of caps.

[0009] In the above scheme, preferably, a pushing device is provided outside the storage compartment, which can push the cap out to cover the oil cylinder filling port.

[0010] In the above-mentioned scheme, preferably, a driving device is included, which includes a driving push rod, and the driving push rod is fixedly connected to the storage compartment to drive the storage compartment to move.

[0011] In the above scheme, preferably, the storage area inside the storage compartment where the cap is placed is inclined, with the inclination direction being downward towards the outlet.

[0012] In the above scheme, preferably, the base is provided with a slide rail; the sealing device is provided with a sliding groove that can cooperate with the slide rail.

[0013] In the above scheme, preferably, one end of the slide rail is provided with a stop to limit the sliding stroke of the sealing device.

[0014] In the above scheme, preferably, a funnel is included; the base is provided with a mounting hole for placing the funnel, and the mounting hole is located below the oil filling port of the oil cylinder.

[0015] The beneficial effects of this utility model are as follows: After completing the clamping and testing functions, the cap is sealed to the oil cylinder filling port via a storage device, which can promptly prevent residual hydraulic oil leakage, avoid oil waste and production environment pollution, and prevent oil contamination from affecting the quality of subsequent assembly. Simultaneously, the automatic storage device ensures accurate alignment between the cap and the oil cylinder port, reducing manual operation deviations and improving the stability and reliability of the sealing process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a hydraulic lock cylinder mounting fixture according to the present invention.

[0017] Figure 2 This is a cross-sectional view of the storage compartment in this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the storage compartment in this utility model.

[0019] Figure 4 This is a top view of a hydraulic lock cylinder mounting fixture according to the present invention.

[0020] Figure 5 This is a cross-sectional view of a hydraulic lock cylinder mounting fixture according to the present invention.

[0021] In the diagram: Base-1, Detection cylinder-2, Hydraulic cylinder-7, Cylinder clamping device-3, Hydraulic cylinder clamping device-4, Sealing device-5, Storage compartment-501, Drive device-502, Drive push rod-503, Cap-6, Pushing device-511, Outlet-512, Groove-513, Slide rail-101, Sliding groove-514, Stop block-111, Funnel-102, Mounting hole-103, First pressure plate-301, First clamping assembly-302, Second pressure plate-401, Second clamping assembly-402; Oil inlet-701. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-4 .

[0023] This utility model provides a hydraulic cylinder mounting fixture, which is used to fix the test cylinder 2 and the oil cylinder during the cylinder testing process, and automatically cover them to prevent contamination.

[0024] For details, see Figure 1 The hydraulic lock cylinder mounting fixture includes a base 1, on which a detection cylinder 2 is fixedly mounted, and a cylinder 7 to be tested is fixed on the base 1.

[0025] In this embodiment, the base 1 is also provided with a cylinder fixing device 3 and a hydraulic cylinder fixing device 4; the cylinder detection device includes a first pressure plate 301, on which a first clamping assembly 302 is provided. The first clamping assembly 302 is composed of bolts and nuts. By tightening the nuts, the first pressure plate 301 generates a downward axial force to press the detection cylinder 2, so as to prevent it from loosening due to cylinder vibration or force during the detection process; the hydraulic cylinder fixing device 4 includes a second pressure plate 401, on which a second clamping assembly 402 is provided. The second clamping assembly 402 is composed of bolts and nuts. By tightening the nuts, the second pressure plate 401 generates a downward axial force to press the hydraulic cylinder 7.

[0026] The first pressure plate 301 and the second pressure plate 401 are made of thick plates, such as steel plates. Their high rigidity can evenly distribute the clamping force to the area in contact with the detection cylinder 2 or the hydraulic cylinder 7, avoiding deformation of the outer shell of the detection cylinder 2 due to excessive local force. At the same time, the large area of ​​contact between the thick plate and the detection cylinder 2 or the hydraulic cylinder 7 can reduce the pressure per unit area, protect the outer surface of the detection cylinder 2 or the hydraulic cylinder 7 from damage, and ensure its stability.

[0027] The push rod end of the detection cylinder 2 abuts against the push rod end of the oil cylinder 7 to be tested for the purpose of testing the oil cylinder 7.

[0028] At one end of the oil inlet 701 of the oil cylinder 7, a sealing device 5 is provided, and a pushing device 511 can push out the cap 6 to cover the oil inlet 701 to prevent oil leakage or secondary pollution of the oil cylinder.

[0029] The sealing device 5 includes a storage compartment 501 and a driving device 502. The driving device 502 includes a driving push rod 503. One end of the driving push rod 503 is fixedly connected to the storage compartment 501 to drive the storage compartment 501 to move. The storage compartment 501 is in sliding fit with the base 1. The driving device 502 can be an electric push rod, a cylinder or a hydraulic cylinder.

[0030] In this embodiment, a slide rail 101 is provided on the base 1 to prevent the storage compartment 501 from deviating during movement. The storage compartment 501 can move by cooperating with the slide rail 101 through the sliding groove 514. At the same time, a stop block 111 is provided at the other end of the slide rail 101. The stop block 111 can limit the sliding stroke of the storage compartment 501 on the slide rail 101, so that the outlet 512 of the storage compartment 501 is coaxial with the hydraulic cylinder 7.

[0031] The storage compartment 501 has an internal accommodating area for the cap 6 set at a preset tilt angle. This tilt direction is from top to bottom towards the outlet 512. The angle formed by the bottom surface of the accommodating area and the horizontal plane allows the cap 6 to slide naturally towards the outlet 512 under its own weight. This achieves automatic replacement of the cap 6 without additional power, ensuring that there is always a cap 6 ready at the outlet 512, which facilitates the pushing device 511 to push the cap 6 to the oil filling port 701 of the oil cylinder 7. The tilt angle is set within the range of 3 degrees to 15 degrees.

[0032] Meanwhile, the storage compartment 501 has a groove 513 on its inner wall in the direction of the outlet 512 that matches the outer contour of the cap 6. When the cap 6 slides toward the outlet 512 under the tilting angle of the storage compartment 501, the groove 513 can constrain the cap 6. At the same time, the precise fit between the groove 513 and the outer contour of the cap 6 can automatically correct its slight deviation when the cap 6 approaches the outlet 512, ensuring that the axis of the cap 6 is consistent with the center line of the outlet 512. This provides a precise initial positioning for the subsequent pushing mechanism 511 to push the cap 6 to combine with the oil filling port 701, reducing docking deviation.

[0033] The base 1 is provided with a mounting hole 103 for placing a funnel 102. The mounting hole 103 is located below the oil inlet 701, and the funnel 102 can receive any dripping oil. Meanwhile, the funnel 102 is available in two types: a single-sided open funnel 102 and a double-sided open funnel 102. When the funnel 102 is a double-sided open funnel 102, one end can be connected to the oil tank through a pipe to form a complete oil return path. The connection pipe leads the oil to the oil tank for recycling, realizing the recycling of oil, reducing waste, and avoiding pollution caused by oil accumulation.

[0034] Use the method described above for installing the hydraulic lock cylinder clamp: The testing cylinder 2 is fixedly installed on the base, and the oil cylinder 7 is fixed on the base so that the push rod end of the testing cylinder 2 abuts against the push rod end of the oil cylinder 7 to be tested. By injecting oil into the oil inlet 701 of the oil cylinder 7, the push rod is pushed outward by the oil pressure and comes into contact with the testing cylinder 2 to test whether the oil cylinder 7 can be used normally.

[0035] When the oil cylinder 7 is tested and the oil gun is removed from the oil inlet 701, the funnel 102 installed on the base 1 can collect the excess leaked oil. After the test is completed, the drive device 502 is started. The drive device 502 is fixedly connected to the storage compartment 501 through the drive push rod 503 to drive the storage compartment 501 to move along the slide rail 101. When the outlet 512 of the storage compartment 501 is coaxial with the oil cylinder 7, the storage compartment 501 stops moving. When the outlet 512 is aligned with the oil filling port 701 of the oil cylinder 7, the pushing device 511 is activated, and the pushing device 511 pushes out the cap 6 so that the cap 6 covers the oil filling port 701. After the cap 6 is closed with the oil inlet 701, the drive device 502 is activated to move the storage compartment 501 back to its original position along the slide rail 101. At the same time, in the storage compartment 501, the angle formed by the bottom surface of the accommodating area and the horizontal plane allows the cap 6 to slide naturally towards the outlet 512 under its own gravity, achieving automatic replacement of the cap 6 without additional power.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hydraulic cylinder mounting fixture, comprising a base (1), characterized in that: A detection cylinder (2) is fixedly installed on the base (1). The oil cylinder (7) to be tested is fixed on the base (1). The push rod end of the detection cylinder (2) abuts against the push rod end of the oil cylinder (7) to be tested. A sealing device (5) is provided at one end of the oil filling port (701) of the oil cylinder (7), which can cover the oil filling port (701) of the oil cylinder (7) to prevent oil leakage or secondary pollution.

2. The hydraulic cylinder mounting fixture according to claim 1, characterized in that: A cylinder fixing device (3) is fixedly installed on the base (1). The cylinder fixing device (3) includes a first pressure plate (301) and a first clamping assembly (302) is provided on the first pressure plate (301).

3. The hydraulic cylinder mounting fixture according to claim 1, characterized in that: A hydraulic cylinder fixing device (4) is fixedly installed on the base (1). The hydraulic cylinder fixing device (4) includes a second pressure plate (401) and a second clamping assembly (402) is provided on the second pressure plate (401).

4. A hydraulic cylinder mounting fixture according to claim 1, characterized in that: The sealing device (5) includes a storage compartment (501) which can hold a number of caps (6).

5. A hydraulic cylinder mounting fixture according to claim 4, characterized in that: A pushing device (511) is provided outside the storage compartment (501). The pushing device (511) can push out the cap (6) so that it covers the oil inlet (701) of the oil cylinder (7).

6. A hydraulic cylinder mounting fixture according to claim 4, characterized in that: It includes a drive unit (502), which includes a drive push rod (503) that is fixedly connected to the storage compartment (501) to drive the storage compartment (501) to move.

7. A hydraulic cylinder mounting fixture according to claim 4, characterized in that: The storage compartment (501) has an inclined area for holding the cap (6), which is inclined downwards towards the outlet (512).

8. A hydraulic cylinder mounting fixture according to claim 1, characterized in that: The base (1) is provided with a slide rail (101); the sealing device (5) is provided with a sliding groove (514) that can cooperate with the slide rail (101).

9. A hydraulic cylinder mounting fixture according to claim 8, characterized in that: One end of the slide rail (101) is provided with a stop (111) to limit the sliding stroke of the sealing device (5).

10. A hydraulic cylinder mounting fixture according to claim 1, characterized in that: Includes a funnel (102); the base (1) is provided with a mounting hole (103) for placing the funnel (102), and the mounting hole (103) is located below the oil filling port (701) of the oil cylinder.